US Bridges

SD037 N over Cain Ck

Fair

Beadle County, South Dakota · 4.4 N Sanborn CO Line · Structure no. 000000003240257

Built
1970
55 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
171 ft
3 main spans
Daily traffic
1,528
2024 count
Owner
State
State Highway Agency

About this bridge

SD037 N over Cain Ck is a steel continuous stringer/multi-beam or girder carrying SD037 N over Cain Ck in Beadle County, South Dakota. It was built in 1970, so it is 55 years old, older than the South Dakota average of 48.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 1,528 vehicles a day, roughly 9% of them trucks, projected to reach 2,217 by 2044. The structure is 171 ft (52.2 m) long and 41 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesSD037 N
CrossesCain Ck
Location4.4 N Sanborn CO Line
RouteState Highway 37
Coordinates44.26004, -98.21357
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.9 US tons
Inventory rating34.6 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length171 ft (52.2 m)
Longest span65 ft (19.8 m)
Deck width41 ft (12.4 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,528 (2024)
Projected traffic2,217 by 2044
Trucks9%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SD037 N over Cain Ck built?

It was built in 1970, making it 55 years old in 2025.

What condition is SD037 N over Cain Ck in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in May 2024.

How much traffic does SD037 N over Cain Ck carry?

About 1,528 vehicles per day (2024 count), of which roughly 9% are trucks.

How long is SD037 N over Cain Ck?

The structure is 171 ft (52.2 m) long with a longest span of 65 ft (19.8 m) and a deck 41 ft wide.

Who owns SD037 N over Cain Ck?

It is owned by the State Highway Agency.